odell



(Model.)

2 Sheets-Sheet l J. B. ODELL.

MOLD.

- @M (j (TA I @fvag (Model.) 2 sheetseeeee 2.

J. B. ODELL.

MOLD. No. 383,661. PatentedJalL 5, 1886.

uilmwMlmWHllilil UNITED STATES PATENT OFFICE.

JOHN B. ODFJLL7 OF CHICAGO, ILLINOIS.

MOLD.

SPECIFICATION forming part of Letters Patent No. 333,661, dated January5, 1886.

(Model.)

To @ZZ whom it may concern,.-

Be it known that I, JOHN B. ODELL, residing at Chicago, in Cook county,in the State of Illinois, a citizen of the United States, have inventeda new and useful Improvement in Molds for Casting Metals, of which thefollowing is a speciiication.

Figure l is a perspective view of a mold closed to receive the zinc.Fig. 2 is a perspective view of an electrode. Fig. 3 isa top of theelectrode, showing the Wire and its connections. Fig. 4 is a sectionalView of the mold taken through Fig. 1 at x x. a section of the moldtaken through Fig. 4 at 5 5. Fig. 6 is a detailed view of Fig. 5. Fig. 7is an elevation of the old Way of making the top of the electrode.

The object of my invention is to cast the hole in which the wireconnection is made at the top at the time the electrode is made, asshown in Fig. 2 at o. Fig. 7 shows the 01d method of making that portionof the top. This is done by taking a piece of brass rod and drilling ahole in it and placing it in the mold and pouring in the zinc. This isexpensive. f

I attain this object by the mechanism illustrated in the accompanyingdrawings.

Similar letters refer to similar parts throughout the several parts.

The mold is made in the usual form of such molds for casting electrodes;and it consists of a center piece, A, (see, Figs. l and 4,) in whichthere is an opening formed in the shape of the bottom of electrode B,Fig. 2, and covers C C, which inclose the center piece when shuttogether, as shown in Fig. l, C being shown in Fig. 4. The covers areopened and shut by handles y g. Both of these covers have a projection,D D', on the under side, and have in them depressions in the shape ofthe stem of the electrode shown at E. When Fig. 5 is the covers C andCare closed.the depressions come in line with the proper end of theopening in the center piece, A, thus forming a perfect matrix, in shapeof Fig. 2, to receive the metal.

Through the bottom end of the cover C and inside the depression E, Iplace a pin, a, Figs. 4, 5, and 6. This pin leaves a hole for the Wireafter the electrode is cast. The pin a is held in a sustaining-bar, b.(Shown in Figs. 5 and 6 in full lines, and Fig. 4 in dotted lines.) Inone end of the sustainingbar a pin, c, is inserted, which passes intocover C, to hold it in place and form a guide. Tivo pins, d, are passedthrough the covers C,and are held together and in place by aconnecting-bar, e. The object of these pinsis to form a device forremoving the pin a when the casting is made. This is done by pressing onthe bar e until the pins d d strike the bar c, and cause it to be movedback until the pin a is clear of the casting and leaves a hole for theconnecting \vire,as shown in Figs. 2 and 3. The electrode- Wiref is heldrigidly in place in the top of electrode B in the opening o by a met-alkey, f, as clearly shown in Fig. 3.

What I claim, and am desirous of securing by Letters Patent, is

l. ln moldsfor casting electrodes,the removable pin a, in combinationwith the cover CC and center piece, A, alladapted and arranged tooperate as and for the purpose set forth.

2. In molds for casting electrodes, the removable pin a, guide-pin c,and connecting-barb, in combination With the discharging-pins d d, allconstructed and arranged to operate as and for the purposes set forth.

'JOHN B. oDELL.

Witnesses:

Jas. LORENZO GAGE, M. A. KNAPP.

